The taxicabs of New York City, with their distinctive yellow paint, are a widely recognized icon of the city. Taxicabs are operated by private companies and licensed by the New York City Taxi and Limousine Commission. The Commission is a New York City government agency that is best known for its responsibility for the more than 13,000 taxis operating in the city. It also oversees over 40,000 other for-hire vehicles, including "black cars", commuter vans and ambulettes. "Medallion taxis," the familiar yellow cabs, are the only vehicles in the city permitted to pick up passengers in response to a street hail.